feat: TreeView

[cansuaa]

Description

This PR adds the tree-view component.

Related links, issue #, if available: n/a

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

Attention: Patch coverage is 97.91667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 96.62%. Comparing base (f40e0fc) to head (11cd9ed).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/tree-view/tree-item/index.tsx	93.54%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #3477    +/-   ##
========================================
  Coverage   96.61%   96.62%            
========================================
  Files         813      817     +4     
  Lines       23700    23793    +93     
  Branches     7887     8341   +454     
========================================
+ Hits        22898    22989    +91     
+ Misses        795      750    -45     
- Partials        7       54    +47     

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[pan-kot]

I am not sure if it was a deliberate decision. I think if a larger outline offset does look ok in the table, too - we don't need to create an extra prop. It also makes sense that both toggle components look similar.